TrkA Antibody [Unconjugated]


Western blot shows lysates of RPMI 8226 human multiple myeloma cell line. PVDF membrane was probed with 1 µg/mL of Goat Anti-Human TrkA Antigen Affinity-purified Polyclonal Antibody (Catalog # AF175) followed by more
TrkA was detected in immersion fixed paraffin-embedded sections of human colon using Goat Anti-Human TrkA Antigen Affinity-purified Polyclonal Antibody (Catalog # AF175) at 3 µg/mL overnight at 4 °C. Before more
Recombinant Human beta ‑NGF (Catalog # 256-GF) stimulates proliferation in the TF‑1 human erythroleukemic cell line in a dose-dependent manner (orange line). Proliferation elicited by Recombinant Human beta ‑NGF more

Product Details

Reactivity HuSpecies Glossary
Applications WB, Flow, IHC, B/N, CyTOF-ready

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TrkA Antibody [Unconjugated] Summary

Mouse myeloma cell line NS0-derived recombinant human TrkA
Accession # AAA36770
Detects human TrkA in direct ELISAs and Western blots. In direct ELISAs, approximately 50% cross-reactivity with recombinant rat TrkA is observed and 10% cross-reactivity with recombinant human (rh) TrkB and rhTrKC is observed.
Purity Statement
Antigen Affinity-purified
Endotoxin Note
<0.10 EU per 1 μg of the antibody by the LAL method.
Innovator's Reward
Test in a species/application not listed above to receive a full credit towards a future purchase.


  • CyTOF-ready
  • Flow Cytometry 2.5 ug/10^6 cells
  • Immunohistochemistry 5-15 ug/mL
  • Neutralization 3-12 ug/mL
  • Western Blot 1 ug/mL
Reviewed Applications
Read 1 Review rated 5
AF175 in the following applications:

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AF175 in the following applications:

Packaging, Storage & Formulations

Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
No Preservative
Reconstitution Instructions
Reconstitute at 0.2 mg/mL in sterile PBS.


This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for TrkA Antibody [Unconjugated]

  • DKFZp781I14186
  • EC 2.7.10
  • EC
  • MTChigh affinity nerve growth factor receptor
  • Neurotrophic tyrosine kinase receptor type 1
  • neurotrophic tyrosine kinase, receptor, type 1
  • NTRK1
  • NTRK-1
  • p140-TrkA
  • TRK1-transforming tyrosine kinase protein
  • TrkA
  • Trk-A
  • TRKAOncogene TRK
  • tyrosine kinase receptor A


TrkA, the product of the proto-oncogene trk, is a member of the neurotrophic tyrosine kinase receptor family that has three members. TrkA, TrkB and TrkC preferentially bind NGF, NT-4 and BDNF, and NT-3, respectively. All Trk family proteins share a conserved complex subdomain organization consisting of a signal peptide, two cysteine-rich domains, a cluster of three leucine-rich motifs, and two immunoglobulin-like domains in the extracellular region, as well as an intracellular region that contains the tyrosine kinase domain. Two distinct TrkA isoforms that differ by virtue of a 6-amino acid insertion in their extracellular domain have been identified. The longer TrkA isoform is the only isoform expressed within neuronal tissues whereas the shorter TrkA is expressed mainly in non-neuronal tissues. NGF binds to TrkA with low affinity and activates its cytoplasmic kinase, initiating a signaling cascade that mediates neuronal survival and differentiation. Higher affinity binding of NGF requires the coexpression of TrkA with the p75 NGF receptor (NGFR), a member of the tumor necrosis factor receptor superfamily. NGFR binds all neurotrophins with low affinity and modulates Trk activity as well as alters the specificity of Trk receptors for their ligands. NGFR can also mediate cell death when expressed independent of Trk.

  1. Esposito, D. et al. (2001) J. Biol. Chem. 276:32687.
  2. Sofroniew, M.V. et al. (200) Annu. Rev. Neurosci. 24:1217.


This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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Publications for TrkA Antibody (AF175)(9)

We have publications tested in 2 confirmed species: Human, Rabbit.

We have publications tested in 6 applications: Flow Cytometry, Functional Assay, ICC, IHC, Neutralization, Western Blot.

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Functional Assay
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Showing Publications 1 - 9 of 9.
Publications using AF175 Applications Species
C Castellini, S Mattioli, AD Bosco, E Cotozzolo, A Cartoni Ma, M Rende, AM Stabile, A Pistilli Nerve growth factor receptor role on rabbit sperm storage Theriogenology, 2020;153(0):54-61. 2020 [PMID: 32442740] (Flow Cytometry, Rabbit) Flow Cytometry Rabbit
C Castellini, S Mattioli, A Dal Bosco, G Collodel, A Pistilli, AM Stabile, L Macchioni, F Mancuso, G Luca, M Rende In vitro effect of nerve growth factor on the main traits of rabbit sperm Reprod. Biol. Endocrinol., 2019;17(1):93. 2019 [PMID: 31718673] (Western Blot, Rabbit) Western Blot Rabbit
S Desiderio, S Vermeiren, C Van Campen, S Kricha, E Malki, S Richts, EV Fletcher, T Vanwelden, BZ Schmidt, KA Henningfel, T Pieler, CG Woods, V Nagy, C Verfaillie, EJ Bellefroid Prdm12 Directs Nociceptive Sensory Neuron Development by Regulating the Expression of the NGF Receptor TrkA Cell Rep, 2019;26(13):3522-3536.e5. 2019 [PMID: 30917309] (ICC, Human) ICC Human
AJ Alshawaf, S Viventi, W Qiu, G D'Abaco, B Nayagam, M Erlichster, G Chana, I Everall, J Ivanusic, E Skafidas, M Dottori Phenotypic and Functional Characterization of Peripheral Sensory Neurons derived from Human Embryonic Stem Cells Sci Rep, 2018;8(1):603. 2018 [PMID: 29330377] (ICC, Human) ICC Human
Prencipe G, Minnone G, Strippoli R, De Pasquale L, Petrini S, Caiello I, Manni L, De Benedetti F, Bracci-Laudiero L Nerve growth factor downregulates inflammatory response in human monocytes through TrkA. J Immunol, 2014;192(7):3345-54. 2014 [PMID: 24585880] (Neutralization, Human) Neutralization Human
Flowerdew S, Wick D, Himmelein S, Horn A, Sinicina I, Strupp M, Brandt T, Theil D, Hufner K Characterization of neuronal populations in the human trigeminal ganglion and their association with latent herpes simplex virus-1 infection. PLoS ONE, 2013;8(12):e83603. 2013 [PMID: 24367603] (IHC, Human) IHC Human
Huang YT, Lai PC, Wu CC TrkB antibody elicits cytotoxicity and suppresses migration/invasion of transitional cell carcinoma cells. Int. J. Oncol., 2010;37(4):943-9. 2010 [PMID: 20811716] (Functional Assay, Human) Functional Assay Human
Huang YT, Lai PC, Wu CC, Hsu SH, Cheng CC, Lan YF, Chiu TH BDNF mediated TrkB activation is a survival signal for transitional cell carcinoma cells. Int. J. Oncol., 2010;36(6):1469-76. 2010 [PMID: 20428771] (ICC, Human) ICC Human
Sniderhan LF, Garcia-Bates TM, Burgart M, Bernstein SH, Phipps RP, Maggirwar SB Neurotrophin signaling through tropomyosin receptor kinases contributes to survival and proliferation of non-Hodgkin lymphoma. Exp. Hematol., 2009;37(11):1295-309. 2009 [PMID: 19716854] (ICC, Human) ICC Human

Review for TrkA Antibody (AF175) (1) 51

Average Rating: 5
(Based on 1 review)
We have 1 review tested in 1 species: Human.

Reviews using AF175:
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reviewed by:
Verified Customer
IHC-Fr Human 01/05/2015


Sample TestedSee PMID 24367603

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FAQs for TrkA Antibody (AF175). (Showing 1 - 1 of 1 FAQs).

  1. I am searching (with difficulty) for an antibody against Trka which can be used in flow cytometry. Since I am planning to use it for bead sorting of live cells it needs to be for a part of the receptor which is on the outside of the cell. Please can you let me know if you can help me with this.
    • NBP1-47436, NB100-98815 and NB100-65266 all bind to the extracellular domain of Trka, however, none of them are guaranteed for use in flow cytometry. Our only flow cytometry guaranteed antibodies bind to the intracellular domain. This does not mean one of these antibodies won't work for flow, we just can not guarantee it. If you would be interested in testing this novel application on one of our Trka antibodies, please take a look at our Innovators Reward Program.

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Blogs on TrkA.

Successful Transplantation of Friedreich Ataxia Induced Pluripotent Stem Cell (iPSC)-Derived Sensory Neurons in Dorsal Root Ganglia of Adult Rodents
Jamshed Arslan, Pharm D, PhD The dorsal root ganglia (DRG) are a collection of cell bodies of sensory nerves carrying sensory information – including nociception, mechanoreception and proprioception – from periphera...  Read full blog post.

TrkB: Bridging Ontogenesis and Oncogenesis
Tropomyosin receptor kinase B (TrkB) is a member of the Trk receptor tyrosine kinases family consisting of TrkA, TrkB and TrkC. The sequence of these family members is highly conserved. Interaction of brain-derived neurotrophic factor (BDNF) with its ...  Read full blog post.

TrkB: Docking for Neurotrophins and Beyond.
Tropomyosin receptor kinase B (TrkB) is a member of the Trk receptor tyrosine kinases family consisting of TrkA, TrkB and TrkC. The sequence of these family members is highly conserved. TrK's are activated by several neurotrophins, which are small pro...  Read full blog post.

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Recent Reviews


Verified Customer
Application: IHC-Fr
Species: Human


Gene Symbol NTRK1